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Emerald|Lab Grown|IGI

1.00ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG488128326

Shape and cutting style on the report: Emerald cut

Certificate IGI LG488128326

Diamond specifications and retailer prices

From £101 GBP
As of November 1, 2026
Save £948 GBP (90%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,049 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1ct lab-grown emerald diamond

This 1ct lab-grown emerald sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG488128326 or 488128326. Listed at 14 retailers as of November 1, 2026, with prices from £101 to £1,049, a £948 spread on the same certified stone. MOH London lists it at £1,049. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle22.7°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488128326
Dimensions6.54 × 4.78 × 3.23 mm
L/W Ratio1.37
Culet sizeLong
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.54 mm4.78 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488128326
Side View
Table 57.5%Crown 22.7°Girdle: Slightly ThickPavilion 36.6°Culet: LNGDepth 67.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,049 GBP|Low: £97 GBP|High: £1,062 GBP|Avg: £275 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 9£101 GBP
Retailer 3£114 GBP
Retailer 4£117 GBP
Retailer 11£126 GBP
Retailer 13£126 GBP
Retailer 10£167 GBP
Retailer 2£213 GBP
Retailer 6£223 GBP
Retailer 7£238 GBP
Retailer 5£308 GBP
Retailer 12£404 GBP
Retailer 8£426 GBP
MOH London£1,049 GBP

41 data points across 13 retailers

14 retailers£101 GBP to £1,049 GBP

A
Cheapest Retailer
-
£101 GBP
A
Retailer 2
-
£114 GBP
View
Final sale: no returns
A
Retailer 3
-
£117 GBP
View
A
Retailer 4
-
£126 GBP
View
Retailer 5
-
£126 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£143 GBP
View
B+
Retailer 7
-
£167 GBP
View
A
Retailer 8
-
£213 GBP
View
Retailer 9
-
£223 GBP
View
Price last confirmed 8 days ago
A
Retailer 10
-
£238 GBP
View
B+
Retailer 11
-
£308 GBP
View
B
Retailer 12
-
£404 GBP
View
B
Retailer 13
-
£426 GBP
View
Most Expensive
B
MOH London
LG488128326 · Nov 2
£1,049 GBP
View
13 more retailers have this diamond
Prices start from £101 GBPSave up to £948 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.00ct Emerald
£101 GBP